28 static void verify_start(struct ccw_device *cdev);
33 static void verify_done(struct ccw_device *cdev, int rc)  in verify_done()  argument
35 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_done()
36 	struct ccw_dev_id *id = &cdev->private->dev_id;  in verify_done()
37 	int mpath = cdev->private->flags.mpath;  in verify_done()
38 	int pgroup = cdev->private->flags.pgroup;  in verify_done()
51 	ccw_device_verify_done(cdev, rc);  in verify_done()
57 static void nop_build_cp(struct ccw_device *cdev)  in nop_build_cp()  argument
59 	struct ccw_request *req = &cdev->private->req;  in nop_build_cp()
60 	struct ccw1 *cp = cdev->private->iccws;  in nop_build_cp()
72 static void nop_do(struct ccw_device *cdev)  in nop_do()  argument
74 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_do()
75 	struct ccw_request *req = &cdev->private->req;  in nop_do()
78 			      ~cdev->private->path_noirq_mask);  in nop_do()
81 	nop_build_cp(cdev);  in nop_do()
82 	ccw_request_start(cdev);  in nop_do()
86 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in nop_do()
92 static enum io_status nop_filter(struct ccw_device *cdev, void *data,  in nop_filter()  argument
104 static void nop_callback(struct ccw_device *cdev, void *data, int rc)  in nop_callback()  argument
106 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_callback()
107 	struct ccw_request *req = &cdev->private->req;  in nop_callback()
114 		cdev->private->path_noirq_mask |= req->lpm;  in nop_callback()
117 		cdev->private->path_notoper_mask |= req->lpm;  in nop_callback()
124 	nop_do(cdev);  in nop_callback()
128 	verify_done(cdev, rc);  in nop_callback()
134 static void spid_build_cp(struct ccw_device *cdev, u8 fn)  in spid_build_cp()  argument
136 	struct ccw_request *req = &cdev->private->req;  in spid_build_cp()
137 	struct ccw1 *cp = cdev->private->iccws;  in spid_build_cp()
139 	struct pgid *pgid = &cdev->private->pgid[i];  in spid_build_cp()
149 static void pgid_wipeout_callback(struct ccw_device *cdev, void *data, int rc)  in pgid_wipeout_callback()  argument
153 		verify_done(cdev, rc);  in pgid_wipeout_callback()
160 	cdev->private->flags.pgid_unknown = 0;  in pgid_wipeout_callback()
161 	verify_start(cdev);  in pgid_wipeout_callback()
167 static void pgid_wipeout_start(struct ccw_device *cdev)  in pgid_wipeout_start()  argument
169 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_wipeout_start()
170 	struct ccw_dev_id *id = &cdev->private->dev_id;  in pgid_wipeout_start()
171 	struct ccw_request *req = &cdev->private->req;  in pgid_wipeout_start()
175 		      id->ssid, id->devno, cdev->private->pgid_valid_mask,  in pgid_wipeout_start()
176 		      cdev->private->path_noirq_mask);  in pgid_wipeout_start()
185 	if (cdev->private->flags.mpath)  in pgid_wipeout_start()
187 	spid_build_cp(cdev, fn);  in pgid_wipeout_start()
188 	ccw_request_start(cdev);  in pgid_wipeout_start()
194 static void spid_do(struct ccw_device *cdev)  in spid_do()  argument
196 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_do()
197 	struct ccw_request *req = &cdev->private->req;  in spid_do()
201 	req->lpm = lpm_adjust(req->lpm, cdev->private->pgid_todo_mask);  in spid_do()
209 	if (cdev->private->flags.mpath)  in spid_do()
211 	spid_build_cp(cdev, fn);  in spid_do()
212 	ccw_request_start(cdev);  in spid_do()
216 	if (cdev->private->flags.pgid_unknown) {  in spid_do()
218 		pgid_wipeout_start(cdev);  in spid_do()
221 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in spid_do()
227 static void spid_callback(struct ccw_device *cdev, void *data, int rc)  in spid_callback()  argument
229 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_callback()
230 	struct ccw_request *req = &cdev->private->req;  in spid_callback()
237 		cdev->private->flags.pgid_unknown = 1;  in spid_callback()
238 		cdev->private->path_noirq_mask |= req->lpm;  in spid_callback()
241 		cdev->private->path_notoper_mask |= req->lpm;  in spid_callback()
244 		if (cdev->private->flags.mpath) {  in spid_callback()
246 			cdev->private->flags.mpath = 0;  in spid_callback()
250 		cdev->private->flags.pgroup = 0;  in spid_callback()
256 	spid_do(cdev);  in spid_callback()
260 	verify_start(cdev);  in spid_callback()
263 	verify_done(cdev, rc);  in spid_callback()
266 static void spid_start(struct ccw_device *cdev)  in spid_start()  argument
268 	struct ccw_request *req = &cdev->private->req;  in spid_start()
277 	spid_do(cdev);  in spid_start()
300 static void pgid_analyze(struct ccw_device *cdev, struct pgid **p,  in pgid_analyze()  argument
303 	struct pgid *pgid = &cdev->private->pgid[0];  in pgid_analyze()
312 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_analyze()
332 static u8 pgid_to_donepm(struct ccw_device *cdev)  in pgid_to_donepm()  argument
334 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_to_donepm()
343 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_to_donepm()
345 		pgid = &cdev->private->pgid[i];  in pgid_to_donepm()
353 		if (cdev->private->flags.mpath) {  in pgid_to_donepm()
366 static void pgid_fill(struct ccw_device *cdev, struct pgid *pgid)  in pgid_fill()  argument
371 		memcpy(&cdev->private->pgid[i], pgid, sizeof(struct pgid));  in pgid_fill()
377 static void snid_done(struct ccw_device *cdev, int rc)  in snid_done()  argument
379 	struct ccw_dev_id *id = &cdev->private->dev_id;  in snid_done()
380 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_done()
389 	pgid_analyze(cdev, &pgid, &mismatch, &reserved, &reset);  in snid_done()
390 	if (reserved == cdev->private->pgid_valid_mask)  in snid_done()
395 		donepm = pgid_to_donepm(cdev);  in snid_done()
397 		cdev->private->pgid_reset_mask |= reset;  in snid_done()
398 		cdev->private->pgid_todo_mask &=  in snid_done()
399 			~(donepm | cdev->private->path_noirq_mask);  in snid_done()
400 		pgid_fill(cdev, pgid);  in snid_done()
405 		      id->devno, rc, cdev->private->pgid_valid_mask, sch->vpm,  in snid_done()
406 		      cdev->private->pgid_todo_mask, mismatch, reserved, reset);  in snid_done()
409 		if (cdev->private->flags.pgid_unknown) {  in snid_done()
410 			pgid_wipeout_start(cdev);  in snid_done()
414 		if (cdev->private->pgid_todo_mask == 0) {  in snid_done()
415 			verify_done(cdev, sch->vpm == 0 ? -EACCES : 0);  in snid_done()
419 		spid_start(cdev);  in snid_done()
423 		cdev->private->flags.pgroup = 0;  in snid_done()
424 		cdev->private->flags.mpath = 0;  in snid_done()
425 		verify_start(cdev);  in snid_done()
428 		verify_done(cdev, rc);  in snid_done()
435 static void snid_build_cp(struct ccw_device *cdev)  in snid_build_cp()  argument
437 	struct ccw_request *req = &cdev->private->req;  in snid_build_cp()
438 	struct ccw1 *cp = cdev->private->iccws;  in snid_build_cp()
443 	cp->cda		= (u32) (addr_t) &cdev->private->pgid[i];  in snid_build_cp()
452 static void snid_do(struct ccw_device *cdev)  in snid_do()  argument
454 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_do()
455 	struct ccw_request *req = &cdev->private->req;  in snid_do()
459 			      ~cdev->private->path_noirq_mask);  in snid_do()
462 	snid_build_cp(cdev);  in snid_do()
463 	ccw_request_start(cdev);  in snid_do()
467 	if (cdev->private->pgid_valid_mask)  in snid_do()
469 	else if (cdev->private->path_noirq_mask)  in snid_do()
473 	snid_done(cdev, ret);  in snid_do()
479 static void snid_callback(struct ccw_device *cdev, void *data, int rc)  in snid_callback()  argument
481 	struct ccw_request *req = &cdev->private->req;  in snid_callback()
485 		cdev->private->pgid_valid_mask |= req->lpm;  in snid_callback()
488 		cdev->private->flags.pgid_unknown = 1;  in snid_callback()
489 		cdev->private->path_noirq_mask |= req->lpm;  in snid_callback()
492 		cdev->private->path_notoper_mask |= req->lpm;  in snid_callback()
499 	snid_do(cdev);  in snid_callback()
503 	snid_done(cdev, rc);  in snid_callback()
509 static void verify_start(struct ccw_device *cdev)  in verify_start()  argument
511 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_start()
512 	struct ccw_request *req = &cdev->private->req;  in verify_start()
513 	struct ccw_dev_id *devid = &cdev->private->dev_id;  in verify_start()
519 	memset(cdev->private->pgid, 0, sizeof(cdev->private->pgid));  in verify_start()
520 	cdev->private->pgid_valid_mask = 0;  in verify_start()
521 	cdev->private->pgid_todo_mask = sch->schib.pmcw.pam;  in verify_start()
522 	cdev->private->path_notoper_mask = 0;  in verify_start()
530 	if (cdev->private->flags.pgroup) {  in verify_start()
534 		snid_do(cdev);  in verify_start()
540 		nop_do(cdev);  in verify_start()
554 void ccw_device_verify_start(struct ccw_device *cdev)  in ccw_device_verify_start()  argument
557 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_verify_start()
562 	cdev->private->flags.pgroup = cdev->private->options.pgroup;  in ccw_device_verify_start()
563 	cdev->private->flags.mpath = cdev->private->options.mpath;  in ccw_device_verify_start()
564 	cdev->private->flags.doverify = 0;  in ccw_device_verify_start()
565 	cdev->private->path_noirq_mask = 0;  in ccw_device_verify_start()
566 	verify_start(cdev);  in ccw_device_verify_start()
572 static void disband_callback(struct ccw_device *cdev, void *data, int rc)  in disband_callback()  argument
574 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in disband_callback()
575 	struct ccw_dev_id *id = &cdev->private->dev_id;  in disband_callback()
580 	cdev->private->flags.mpath = 0;  in disband_callback()
588 	ccw_device_disband_done(cdev, rc);  in disband_callback()
599 void ccw_device_disband_start(struct ccw_device *cdev)  in ccw_device_disband_start()  argument
601 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_disband_start()
602 	struct ccw_request *req = &cdev->private->req;  in ccw_device_disband_start()
606 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_disband_start()
615 	if (cdev->private->flags.mpath)  in ccw_device_disband_start()
617 	spid_build_cp(cdev, fn);  in ccw_device_disband_start()
618 	ccw_request_start(cdev);  in ccw_device_disband_start()
626 static void stlck_build_cp(struct ccw_device *cdev, void *buf1, void *buf2)  in stlck_build_cp()  argument
628 	struct ccw_request *req = &cdev->private->req;  in stlck_build_cp()
629 	struct ccw1 *cp = cdev->private->iccws;  in stlck_build_cp()
642 static void stlck_callback(struct ccw_device *cdev, void *data, int rc)  in stlck_callback()  argument
659 static void ccw_device_stlck_start(struct ccw_device *cdev, void *data,  in ccw_device_stlck_start()  argument
662 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_stlck_start()
663 	struct ccw_request *req = &cdev->private->req;  in ccw_device_stlck_start()
666 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_stlck_start()
674 	stlck_build_cp(cdev, buf1, buf2);  in ccw_device_stlck_start()
675 	ccw_request_start(cdev);  in ccw_device_stlck_start()
681 int ccw_device_stlck(struct ccw_device *cdev)  in ccw_device_stlck()  argument
683 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_stlck()
689 	if (cdev->drv) {  in ccw_device_stlck()
690 		if (!cdev->private->options.force)  in ccw_device_stlck()
703 	cdev->private->state = DEV_STATE_STEAL_LOCK;  in ccw_device_stlck()
704 	ccw_device_stlck_start(cdev, &data, &buffer[0], &buffer[32]);  in ccw_device_stlck()
710 		ccw_request_cancel(cdev);  in ccw_device_stlck()
718 	cdev->private->state = DEV_STATE_BOXED;  in ccw_device_stlck()